net: phy: add genphy_handle_interrupt_no_ack()

It seems there are cases where the interrupts are handled by another entity (ie an IRQ controller embedded inside the PHY) and do not need any other interraction from phylib. For this kind of PHYs, like the RTL8366RB, add the genphy_handle_interrupt_no_ack() function which just triggers the link state machine. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
mariux64 · Nov 6, 2020 · 87de1f0 · 87de1f0
1 parent 0d65cc1
commit 87de1f0
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diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
@@ -2463,6 +2463,19 @@ int genphy_soft_reset(struct phy_device *phydev)
 }
 EXPORT_SYMBOL(genphy_soft_reset);
 
+irqreturn_t genphy_handle_interrupt_no_ack(struct phy_device *phydev)
+{
+	/* It seems there are cases where the interrupts are handled by another
+	 * entity (ie an IRQ controller embedded inside the PHY) and do not
+	 * need any other interraction from phylib. In this case, just trigger
+	 * the state machine directly.
+	 */
+	phy_trigger_machine(phydev);
+
+	return 0;
+}
+EXPORT_SYMBOL(genphy_handle_interrupt_no_ack);
+
 /**
  * genphy_read_abilities - read PHY abilities from Clause 22 registers
  * @phydev: target phy_device struct

diff --git a/include/linux/phy.h b/include/linux/phy.h
@@ -1510,6 +1510,7 @@ int genphy_suspend(struct phy_device *phydev);
 int genphy_resume(struct phy_device *phydev);
 int genphy_loopback(struct phy_device *phydev, bool enable);
 int genphy_soft_reset(struct phy_device *phydev);
+irqreturn_t genphy_handle_interrupt_no_ack(struct phy_device *phydev);
 
 static inline int genphy_config_aneg(struct phy_device *phydev)
 {